After chatting for a while I realized they were using my code to manage nuclear weapons simulations. That's a consequence of licenses like MIT and BSD and Apach

After chatting for a while I realized they were using my code to manage nuclear weapons simulations. That's a consequence of licenses like MIT and BSD and Apache: you don't control who uses your software. While true, there's a big difference between the guy that makes a generic door stop that's used to prop open the door at a nuclear test lab, and the guy making precision parts specific to a nuclear detonator. Maybe you can't prevent your work being used for what you consider to be immoral, but you can avoid working on a project that's directly contributing to that use.